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680 C}lesapeake Drive Redwood City,CA 94063 (650) 364-9600 FAX.(650)3x34'313'3 j' <br /> Sequoia 404 N.Wiget Lane Walnut Creek,CA 94598 (510) 988-9600 FAX(51988-9673 <br /> FAX(9166) <br /> Anal ieal 819 Striker Avenue,Suite 8 Sacramento,CA 95834 (916) 921.9600 )921.O1oo <br /> ::::T� <br /> :. <br /> ::::. ..:::... <br /> ............. <br /> ................ . <br /> ..:.....:.........:................................:f: <br /> Enviros ................Client Project ID: $hell Stockton <br /> 5:270 Perkins Ave. Matrix: Solid <br /> ".;:Sonoma, CA 95476 <br /> Reported: Nov 6, 1997:::: <br /> "' ane <br /> Work Order#: 9710H66 -01-04 p............:........................................._:. <br /> �s n: Tom M <br /> Attentio ::.:::::.......... <br /> QUALITY CONTROL DATA REPORT <br /> Analyte: Benzene Toluene Ethyl Xylenes Gas <br /> Benzene <br /> QC Batch#: GC110397BTEXEXA GC1103978TEXEXA GC110397BTEXEXA GC110397BTEXEXA GC110397BTEXEXA <br /> Analy. Method: EPA 8020 EPA 8020 EPA 8020 EPA 8020 EPA 8015M <br /> Prep. Method: EPA 5030 EPA 5030 EPA 5030 EPA 5030 EPA 5030 <br /> Analyst: A.Porter A.Porter A.Porter A.Porter A.Porter <br /> MS/MSD#: 971OG3106 971OG3106 971063106 971OG3106 971OG3106 <br /> Sample Cone.: N.Q. N.D. N.D. N.D. N.D. <br /> Prepared Date: 11/3/97 11/3/97 11/3/97 11/3/97 11/3/97 <br /> Analyzed Date: 11/3/97 11/3/97 11/3/97 11/3/97 11/3/97 <br /> Instrument I.D.#: GCHP7 GCHP7 GCHP7 GCHP7 GCHP7 <br /> Cone. Spiked: 0.20 mg/Kg 0.20 mg/Kg 0.20 mg/Kg 0.60 mg/Kg 1.2 mg/Kg <br /> Result: 0.20 0.20 0.20 0.59 i.1 <br /> MS % Recovery: 100 100 100 98 92 <br /> Dup. Result: 0.19 0.19 0.19 0.55 1.1 ------ <br /> MSD % Recov.: 95 95 95 93 92 <br /> RPD: 5.1 5.1 5.1 5.2 0.0 <br /> RPD Limit: 0-25 0-25 0-25 0-25 0-25 <br /> LCS #: BLK110397 BLK110397 BLK110397 BLK110397 BLK110397 <br /> Prepared Date: 11/3/97 11/3/97 11/3/97 11/3/97 11/3/97 <br /> Analyzed Date: 11/3/97 11/3/97 11/3/97 11/3/97 11/3/97 <br /> Instrument I.D.#: GCHP7 GCHP7 GCHP7 GCHP7 GCHP7 <br /> Cone. Spiked: 0.20 mg/Kg 0.20 mg/Kg 0.20 mg/Kg 0.60 mg/Kg 1.2 mg/Kg <br /> LCS Result: 0.21 0.20 0.20 0.60 1.2 <br /> LCS %Recov.: 105 100 100 100 100 <br /> MSIMSD 60-140 60-140 60-140 60-140 60-140 <br /> LCS 70-130 70-130 70-130 70-130 70-130 <br /> Control Limits <br /> Please Note: <br /> The LCS is a control sample of known,interferent-free matrix that is analyzed using the same reagents, <br /> Wroject <br /> N LYTICAL preparation,and analytical methods employed for the samples. The matrix spike is an aliquot of sample <br /> fortified with known quantities of specific compounds and subjected to the entire analytical procedure. if <br /> the recovery of analytes from the matrix spike does not fall within specified control limits due to matrix <br /> interference,the LCS recovery is to be used to validate the batch. <br /> y <br /> ager **MS=Matrix Spike,MSD=MS Duplicate,RPD=Relative%Difference 9710H60.EEE <1> <br />